That's really nasty. Why would she think that's a good idea? I presume those are relatives' teeth. Between the dirty fingernails and cavity-filled teeth, hygiene is obviously not a priority in that family.
It'd be a shame to put that in the fireplace. He should cut a slice of the bottom and hang it on the wall.
Somebody's bunghole is going to be highly disappointed...
Dunno if that'd work, lol. In a related note, there is a movement of folks doing something similar at random DUI checkpoints. The defense is that they have done nothing to warrant a search, and thus refuse to speak with police. Instead they do this: